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Finding the Fourth Proportional to 2,079,630, 3,119,445 and 749,934

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Solution

The fourth proportional to 2,079,630, 3,119,445 and 749,934 is: 1,124,901

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079,630 : 3,119,445 = 749,934 : x
  2. Step 2: Convert to fraction form
    2,079,630/3,119,445 = 749,934/x
  3. Step 3: Cross multiply
    2,079,630x = 3,119,445 × 749,934
  4. Step 4: Simplify right side
    2,079,630x = 2,339,377,866,630
  5. Step 5: Solve for x
    x = 2,339,377,866,630/2,079,630
  6. Step 6: Final answer
    x = 1,124,901

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.